Inventor · disambiguated record
Henry Wohltjen
Also filed as: WOHLTJEN HENRY
23 granted patents·2 pending applications·833 citations·filing 1975–2023
96Inventor score
Top patents by PatentIndex Score
25 records- 0197US4312228AMethods of detection with surface acoustic wave and apparati thereforWOHLTJEN HENRY·Filed 1979·Granted Jan 26, 1982·258 cites·16 claims
- 0295US4759210AApparatus for gas-monitoring and method of conducting sameMICROSENSOR SYS INC·Filed 1986·Granted Jul 26, 1988·182 cites·27 claims
- 0386US8279063B2Personnel location and monitoring system and method for enclosed facilitiesWOHLTJEN HENRY·Filed 2008·Granted Oct 2, 2012·28 cites·35 claims
- 0484US7347974B1Materials, method and apparatus for detection and monitoring of chemical speciesUS NAVY·Filed 2000·Granted Mar 25, 2008·26 cites·37 claims
- 0584US4572900AOrganic semiconductor vapor sensing methodUS NAVY·Filed 1984·Granted Feb 25, 1986·44 cites·36 claims
- 0683US7449050B2System, apparatus and method for concentrating chemical vaporsMICROSENSOR SYS INC·Filed 2005·Granted Nov 11, 2008·13 cites·23 claims
- 0780US12235235B2System and method for gas concentration measurementENMET LLC·Filed 2021·Granted Feb 25, 2025·1 cites·21 claims
- 0879US7845206B2System, apparatus and method for dispensing chemical vaporMICROSENSOR SYS INC·Filed 2008·Granted Dec 7, 2010·5 cites·15 claims
- 0979US6221673B1Materials, method and apparatus for detection and monitoring of chemical speciesMICROSENSOR SYS INC·Filed 1998·Granted Apr 24, 2001·51 cites·11 claims
- 1078US9291038B2Apparatus and method for high pressure abrasive fluid injectionTD TOOLS INC·Filed 2014·Granted Mar 22, 2016·5 cites·12 claims
- 1178US7484399B2System, apparatus and method for dispensing chemical vaporMICROSENSOR SYS INC·Filed 2005·Granted Feb 3, 2009·5 cites·21 claims
- 1278US7240535B2Method and apparatus for gas measurement at substantially constant pressureMICROSENSOR SYS INC·Filed 2005·Granted Jul 10, 2007·6 cites·27 claims
- 1375US8925653B2Apparatus and method for high pressure abrasive fluid injectionDOTSON THOMAS L·Filed 2011·Granted Jan 6, 2015·5 cites·12 claims
- 1475US4452624AMethod for bonding insulator to insulatorUS NAVY·Filed 1982·Granted Jun 5, 1984·27 cites·15 claims
- 1574US4513087AReversible optical waveguide vapor sensorUS NAVY·Filed 1983·Granted Apr 23, 1985·28 cites·21 claims
- 1674US4513280AMethod and apparatus for the detection of toxicantsUS NAVY·Filed 1984·Granted Apr 23, 1985·36 cites·13 claims
- 1773US5550062AMethod and apparatus for chemical detection by pyrolysisMICROSENSOR SYS INC·Filed 1993·Granted Aug 27, 1996·42 cites·15 claims
- 1872US9478118B2Hand hygiene complicance confirmation systemKEOWN SAM·Filed 2012·Granted Oct 25, 2016·12 cites·15 claims
- 1971US8349260B2System and method for limiting sensor exposure to ozoneMICROSENSOR SYS INC·Filed 2006·Granted Jan 8, 2013·3 cites·16 claims
- 2063US4636767AMixed semiconductor film device for monitoring gasesUS NAVY·Filed 1985·Granted Jan 13, 1987·24 cites·7 claims
- 2162US4438203AMethod and apparatus for determination of lubricant stabilityUS NAVY·Filed 1982·Granted Mar 20, 1984·22 cites·10 claims
- 2258US2025060330A1Efficacy-Monitored Sensing System and MethodENMET LLC·Filed 2023·Application pending·0 cites
- 2358US2011227740A1Personnel location and monitoring system and method for enclosed facilitiesXHALE INC·Filed 2009·Application pending·0 cites
- 2457US9638669B2Portable fuel dilution meter and methodSPECTRO SCIENT INC·Filed 2014·Granted May 2, 2017·0 cites·23 claims
- 2535US4078551AElectronic sphygmomanometerWOHLTJEN HENRY·Filed 1975·Granted Mar 14, 1978·10 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →